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Data generating apparatus and data generating method

A technology of generating device and generating method, applied in data recording, optical recording/reproducing, digital recording/reproducing, etc., can solve the problems of low data accuracy, RF signal damage, poor decoding results, etc., to improve accuracy sexual effect

Inactive Publication Date: 2011-05-04
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reconstructed RF signal from the disc may be corrupted due to scratches on the disc or dust attached to the disc
As a result, the RF signal will be decoded with the wrong target level, resulting in poor decoding results with lower data accuracy

Method used

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  • Data generating apparatus and data generating method
  • Data generating apparatus and data generating method
  • Data generating apparatus and data generating method

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Embodiment Construction

[0021] The following description is of the preferred contemplated modes of carrying out the invention. This description is only used to illustrate the principle of the present invention, not as a limitation of the present invention. The protection scope of the present invention should be determined by the scope defined in the claims.

[0022] figure 1 is a schematic diagram of the optical disc system. exist figure 1 Among them, an optical pickup unit (optical pickup unit) 2 picks up the RF signal from the optical disc 1 . The captured RF signal is then sent to the signal processing unit 3 for subsequent processing. The signal processing unit 3 is used to process the analog RF signal to generate a processed signal with higher signal quality. The signal processing unit 3 may contain a high pass filter for signal processing. The processed signal is sent to an analog-to-digital converting unit (abbreviated as ADC hereinafter) 4 to be digitized into a digital signal. The ADC...

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Abstract

The invention discloses a data generating apparatus and a data generating method, for generating a Viterbi-processed data using an input signal obtained from an optical disk. The data generating apparatus includes a Viterbi module and a binary signal enhancing module. The Viterbi module is configured to process the input signal according to a binary signal. The binary signal enhancing module is configured to boost the input signal and generate the binary signal accordingly. By means of correcting target levels used by a Viterbi encoder, the data generating apparatus and method can ensure radio frequency signals contorted before inputting the Viterbi encoder to be decode by the Viterbi, so as to improve accuracy of data.

Description

technical field [0001] The present invention relates to a data generating device and a data generating method, in particular to a data generating device and a data generating method for generating Viterbi processed data by using an input signal obtained from an optical disc. Background technique [0002] With the continuous development of computer hardware, optical storage devices have become mainstream devices for data storage, such as DVDs and Blu-ray discs (Blue-ray disk). When the optical disc is captured, a radio-frequency (radio-frequency, hereinafter referred to as RF) signal can be obtained. However, the RF signal reconstructed by the optical disc may be damaged due to scratches on the optical disc or dust attached to the optical disc. As a result, the RF signal will be decoded with the wrong target level, resulting in poor decoding results with lower data accuracy. Contents of the invention [0003] In view of this, the following technical solutions are provided...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/005H03M13/41
CPCG11B20/10009G11B20/10027G11B20/10046G11B20/10296G11B2220/2537H03M13/3707H03M13/41H03M13/6343
Inventor 游志青林郁轩刘碧海
Owner MEDIATEK INC